Machine for wrapping alpha band of material around an object



0. THIRY March 29, 1932.

l ACHINE FOR WRAPPING A BAND OF IATERIAL AROUND AN OBJECT Filed Nov. 21,1930 3 Sheets-Sheet l MACHINE FOKWRAPPING'A BAND 0F MATERIAL AROUND ANOBJECT O. THIRY March 29, 1932.

s Sheet s-Sheet 2 Filed Nov. V21, 1939 AHorney March 29, 1932. THlRYMACHINE FOR WRAPPING A BAND OF IATERIAL AROUND AN OBJECT y 3 6 w a Z 2 ar 2 2 3 p 1 m l w 7 a m i a u A 1 w J w mg f N 9 H- d m p j a flun 4 1 FI \\\L Y I 71 f p Wax A 0501/2 THUZY AH'orneyof the detailed descriptionnow to be iven.

Patented Mar. 29,1932

UNITED STATES OSCAR THEY, OF EPINAY, FRANCE IAGHDIE mn WRAPPING A BAND0! AROUND AN OBJECT Application fled llovember 21, 1980, Serial No.497,815, and in Belgium December 8, 1889.

The present invention relates to a machine for wrapping a band ofmaterial in a helical path around an object.

One of the objects of the invention is to rovide a novel form of chaindrive for the Bobbins generally used in such machines.

Another object is to for centering an object inside of an opening aboutwhich the bobbin turns.

An additional object is to provide novel adjustable guiding means(permitting objects of various forms to be hel in position While beingwrap Further objects will appear in the course with reference to theaccompanying in in which:

1g. 1 is a plain view of one constructive embodiment of the invention;

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Fig. 2 represents a section taken on line 2-2 of Fig. 1;

Fig.3 is a section taken on line 3-3 of Fig. illustrates a detail of thestructure shown in Fig. 1 along a section taken on line 4-4 of thelatter;

, Fig. 5 is a detail of the bobbin actuating mechanism asseen in asection taken on line 5-5 of Fig. 1;

I Fig. 6 is an end view, partially in section,

of the bobbin structure;

Fig. 7 shows the machine represented in Fi 1 and 3 adjusted to receive acircular ob ect such as an automobile tire;

l i 8 shows the same machine adjusted to handle straight bars.

Referring to the various figures of the drawings, there is shown anassembly comosed of the following elements: a C-shaped bbin support ahaving teeth formed on the periphery thereof and supported on an annularring of anti-friction or like metal I); a frame supporting bobbin a andfitting into an opening in table d; means fordriving bobbin a com risina chain e, a plurality of sprocket w eels f and f, wheel f being drivenfrom .a s aft 9 actuated by a motor it through the intermediary of aclutch of any convenient design i; means for displacing bobbin a so asto center the latter rovide novel means by permanently attaching disc1:. to shaft m and winding piano cord 1 in an one of grooves m m or m,formed in s aft m and a spring n attached to shaft m and adapted toexert pressure on a roll of wrapping material j; and means for guidingand displacing the object to be wrapped through the machine comprising aplurality of pulleys 12 and p pulley 12 being mounted to move along avertical bar 9 and being rotated by a shaft driven from shafts 1 and gby means 0 appropriate gears, while ulleys p are pivotal y mounted onlevers p y means of arms p coacting with fixed sectors said pulleys 1)being rotated in the same direction as pulley p by chains p (Fig. 1)driven from shafts g and g by appropriate gearsf fixed rollers 1' and rpositioned on opposite sides of the bobbin and rotating in the samedirection as the three pulleys p, p, 12. said rollers being driven fromshafts g mounted in driven re ation to shaft g,supplemental rollers s a,supported on a movable pedestal s bolted in any one of a number of holes8 formed in the table, said last named rollers being driven by belts apassing over any one of the pulleys such as p, the tension on belt abeing adjustable by either taking in or letting out the latter, or bychanging the position of the pulley over which it passes (the pulle ssuch as p may be mounted to slide axia' ly so as to avoid too great anobliquity of the belts) ,--additional rollers s plvotally mounted andcounterweighted at a and adapted to be moved into position to guide anobject being wrapped,rollers t slidably mounted in guides t andco-acting with rol ers 1' drivenfrom shaft 9 and springs t serving toapply the object being wrapped to rollers r.

The hereinabove described assembly functions in the following manner:assuming that the object is in the nature of an automobile tire, pulleyp is moved along bar g and pulleys p are adjusted .by means of arms 1),the latter being fixed in position relatively to sectors by anyconvenient locking means (Fig. 7 discs at, n are then adjusted toreceive a proper width of wrapping band by inserting piano "wire 1 inone of the grooves m, m or m; if it be desired to simultaneously wrapwith cloth and paper band, 2 rolls are mounted in spaced relation inholes m formed in bobbin a; an object being positioned in the machine,handle is is rotated toraise or lower bobbin a until the latter'isspaced at e ual distances on all sides from the object, w ereby'wrapping roll 9' will remain at a bobbin (1 rollers .9 s, s are thenadjusted to lie in contact. with the object; as soon as motor h isstarted rollers 1', 1, 8 s and pulle s p and p will rotate and displacethe ob ect through bobbin a; at the same time, chain e, engaging withthe teeth on the periphery of bobbin a, will rotate the latter and rollor rolls j mounted thereon; the object to be wrapped will, thereupon, receive a spiral of wrapping material.

If the object to be wrapped is rectilinear, the various rollers andpulleys are moved into the position shown in Figure 8. Rotation of motorh, will then displace the bar through the bobbin opening while rollmoves thereabout.

- Rollers s serve principally to maintain a flexible material such aswire, or the like, in positionwhile being wrapped.

In prior machines complicated ear systems or belts were used for drivingbbin a. When gear systems were used, the opening in bobbin (1 had to belimited in size. When belts were employed, the bobbin skidded during theperiod in which the belt straddled 66 tions of two of said pulleysrelatively to one the gap in the periphery of the bobbin. By using achain drive, neither of the foregoing disadvantages are encountered.

The use of centering system k, k, 70 70 permits roll j to move at asubstantially constant distance from the object being wrapped and thusdoes away with inequalities in tension of the band of wrapping material.

As will be seen from Figs. 1, 2 and-.8, by properly positioning rollerss and s, and pulleys p and 19 a circular object'like an automobile tiremay be wrapped in a vertical (Fig. 1) or in a horizontal position (Figs.1 and 2). a

What I claim is 1; In a wrapping machine, a bobbin, and means fordisplacing an object to-be wrapped through said bobbin, said meanscomprisingthree pulleys positioned in a common plane, meansforindependently changing the posianother and to the third ulley, and meansfor driving one of said pu eys.

2. A structure as defined in claim 1 in combination with a rollermounted with its axis at right angles to the axis of one of saidpulleys, and means for driving said roller.

3. A structure as defined in claim 1, in combination with a rollerpositioned so that its axis forms an angle with an axis of one of saidpulleys, and means for driving. said roller.

4. A structure as defined in claim 1 in combination with'a roller havina fixed axis, a second roller having an ad ustable axis, means formounting the axis of said last named roller in an predetermined positionof adjustment, an 1 means for driving said rollers.

- 5. In a wrapping machine, a support for a roll of wrapping materialcomprising a shaft having a plurality of grooves formed thereon, a firstdisc connected to said shaft, a second disc mountable in spaced relationto said first disc, and a wire inserted in one of said grooves andlimiting the lateral 9 .movement of said second disc on said shaft.

6. In a wrapping machine, a bobbin having an opening in the peripherthereof, means for rotating said bobbin, a rame supporting said bobbin,said frame bein pivotally mounted, and means for angular y displacingsaid frame about its pivotal axis.

In testimony whereof I aflix my signature.

, I OSGAR THIRY.

